cas-client-3.2.1-release.zip===》 https://github.com/apereo/cas/releases/download/v3.5.2/cas-server-3.5.2-release.zip
https://github.com/apereo/cas/releases/download/v3.5.2/cas-server-3.5.2-release.zip
cas-client-3.2.1-release.zip===》https://github.com/apereo/java-cas-client/archive/v3.2.1.zip